package com.cjh.web;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;

/**
 * @Author: huahua
 * @Date: 2020-09-07 23:08
 */
public abstract class BaseServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req,resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //设置响应编码
        resp.setCharacterEncoding("UTF-8");
        resp.setHeader("Content-Type","txt/html;charset=utf-8");
        //请求编码
        req.setCharacterEncoding("UTF-8");
        String action = req.getParameter("action");
//        if ("login".equals(action)){
//            login(req,resp);
//        }else if ("regist".equals(action)){
//            regist(req,resp);
//        }
        //使用反射机制替换if判断
        try {
            //获取action业务鉴别字符串，获取相应的业务，方法反射对象
            Method method = this.getClass().getDeclaredMethod(action,HttpServletRequest.class,HttpServletResponse.class);

            //调用目标业务 方法
            method.invoke(this,req,resp);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException();
        }
    }
}
